Examine the CREATE DISKGROUP command used to create a disk group:<br /> SQL> CREATE DISKGROUP misc EXTERNAL REDUNDANCY<br /> DISK 'ORCL: FRA3' NAME misc1, 'ORCL: FRA4' NAME misc2;<br /> In which situation would you use this method of disk group creation?()
A、When two-way disk mirroring is required for the allocation units
B、When three-way disk mirroring is required for the allocation units
C、When using hardware mirroring or RAID
D、When disk mirroring is required for the Automatic Storage Management (ASM) disks